CN117477518A - High-power double-input power supply for unmanned aerial vehicle - Google Patents
High-power double-input power supply for unmanned aerial vehicle Download PDFInfo
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- CN117477518A CN117477518A CN202311420377.8A CN202311420377A CN117477518A CN 117477518 A CN117477518 A CN 117477518A CN 202311420377 A CN202311420377 A CN 202311420377A CN 117477518 A CN117477518 A CN 117477518A
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- converter
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- power supply
- switching device
- control module
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- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000009977 dual effect Effects 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a high-power double-input power supply for an unmanned aerial vehicle, and belongs to the field of power supply. The system comprises an AC/DC boost converter, a switching device, a first DC/DC converter, a second DC/DC converter, a fan module and a control module; the input end of the AC/DC boost converter is connected with the alternating current input three-phase, and the input end of the switching device is connected with the direct current input module in an electrified manner; the first fan module is connected with the AC/DC boost converter, the second fan module is connected with the first DC/DC converter, the third fan module is connected with the second DC/DC converter, and the control module is connected with the fan module, the switching device, the AC/DC boost converter, the first DC/DC converter and the second DC/DC converter in a communication mode. The invention realizes zero-delay switching of the high-power double-input power supply for the unmanned aerial vehicle, the alternating-current input power supply is preferential, the fan radiating device adjusts the wind speed in real time along with the load size and the temperature of each converter, so that the overall efficiency of the equipment is improved, and the power utilization of the equipment on the aircraft is high in reliability and stability.
Description
Technical Field
The invention relates to the field of power supply, in particular to a high-power double-input power supply for an unmanned aerial vehicle.
Background
With the sustainable development of unmanned aerial vehicle technology, unmanned aerial vehicles are widely applied in the military and civil fields. And the power supply serving as a core component for unmanned aerial vehicle work also develops rapidly. The unmanned aerial vehicle is connected with power supply equipment on the ground through a mooring cable so as to realize long-time work of the unmanned aerial vehicle. Therefore, in order to prevent the phenomenon that the unmanned aerial vehicle loses power due to power failure, a standby power supply is generally arranged inside the unmanned aerial vehicle. When the ground main power supply fails, the power supply is switched to the standby power supply in time to maintain the power of the unmanned aerial vehicle. Meanwhile, the ground main power supply is restored to work and needs to be switched back to the ground main power supply for power supply. The existing input power supply switching method has respective defects, and specifically comprises the following steps:
the diode realizes zero-delay conversion and is only suitable for low-current occasions, the loss is large when the current is large and the voltage is high, the heat productivity is large when the diode works, and a very large heat dissipation device is needed. The zero-delay switching of the field effect transistor is only suitable for low-voltage occasions, and a complex driving circuit is needed when the input voltage is high. Especially under the higher operating mode of voltage class and electric current, need new input switching mode reduce loss in order to promote complete machine efficiency.
Disclosure of Invention
For some existing problems, the present invention aims to provide a high-power dual-input power supply for an unmanned aerial vehicle, so as to solve the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a high-power dual-input power supply for an unmanned aerial vehicle comprises an AC/DC boost converter, a switching device, a first DC/DC converter, a second DC/DC converter, a fan module and a control module;
the input end of the AC/DC boost converter is connected with an AC input three-phase, the output end of the AC/DC boost converter is connected with a high-voltage direct-current bus, and the AC input three-phase converts the AC input into the high-voltage direct-current bus through the AC/DC boost converter;
the input end of the switching device is connected with the direct current input module in an electrifying way, the output end of the switching device is connected with the high-voltage direct current bus in an electrifying way, and the direct current input is connected to the high-voltage direct current bus after passing through the switching device;
the first DC/DC converter input end, the second DC/DC converter input end and the high-voltage direct current bus are connected in an energized mode, the first DC/DC converter output end is connected with the unmanned aerial vehicle power supply bus, the second DC/DC converter output end is electrically connected with the control of the terminal equipment, the high-voltage direct current bus is converted into high-voltage direct current through the first DC/DC converter and is output to supply power for the unmanned aerial vehicle equipment, and the high-voltage direct current bus is converted into low-voltage direct current through the second DC/DC converter and is output to supply power for the terminal equipment;
the fan module comprises a first fan module, a second fan module and a third fan module; the first fan module comprises six groups of fans, is connected with the AC/DC boost converter and is a heat radiating device of the AC/DC boost converter; the second fan module comprises six groups of fans, is connected with the first DC/DC converter and is a heat radiating device of the first DC/DC converter; the third fan module comprises two groups of fans, is connected with the second DC/DC converter and is a heat dissipation device of the second DC/DC converter;
the control module is in communication connection with the fan module, the output end of the control module is in communication connection with the switching device, the control module is in communication connection with the AC/DC boost converter, the first DC/DC converter and the second DC/DC converter, and feedback signals of the AC/DC boost converter, the switching device, the first DC/DC converter, the second DC/DC converter and the fans of each group are sent to the control module; the control module judges whether to switch the input state according to the input feedback signals, and the control module controls the switch of the fan according to the output load states and the temperatures of the AC/DC boost converter, the first DC/DC converter and the second DC/DC converter.
As a further scheme of the invention: and the control module is in communication connection with the high-voltage direct-current bus.
As a further scheme of the invention: the switching device is internally provided with a switching device switch K1, when the control module detects that the input is switched from direct current to alternating current, the control module firstly turns off the switching device switch K1 and then sends out an AC/DC boost converter working command, and the direct current power supply is switched to alternating current power supply in a zero-delay mode.
As a further scheme of the invention: the switching device is internally provided with a trigger D1, when the control module detects that the input is switched from alternating current power supply to direct current power supply, the switching device firstly realizes zero-delay switching action by the trigger D1, and then the control module turns on a switching device switch K1 for zero-delay switching and reducing loss.
As a further scheme of the invention: the control module detects information of output load and temperature state of the AC/DC boost converter and is used for adjusting the running number and the rotating speed of the cooling fan in real time.
As a further scheme of the invention: the rated voltage of the high-voltage direct-current bus is 500V or 700V or 800V, and the output voltage of the high-voltage direct-current bus is any value within the range of 80% -120% of the rated voltage.
As a further scheme of the invention: the output voltages of the first DC/DC converter and the second DC/DC converter are any value in the range of 1000V to 2000V.
As a further scheme of the invention: the alternating current input three-phase comprises a power grid and a generator, and the direct current input comprises a storage battery.
As a further scheme of the invention: the feedback signals include input/output status signals, voltage, current, temperature of the AC/DC boost converter, the first DC/DC converter, the second DC/DC converter.
Compared with the prior art, the invention has the beneficial effects that:
the invention realizes zero-delay switching of the high-power double-input power supply for the unmanned aerial vehicle, the alternating-current input power supply is preferential, the fan radiating device adjusts the wind speed in real time along with the load size and the temperature of each converter, so that the overall efficiency of the equipment is improved, and the power utilization of the equipment on the aircraft is high in reliability and stability.
Drawings
Fig. 1 is a block diagram of a power supply system for a high-power dual-input power supply of an unmanned aerial vehicle.
Fig. 2 is a schematic diagram of dual input switching in a high power dual input power supply for an unmanned aerial vehicle.
Fig. 3 is a block diagram of a temperature control system in a high-power dual-input power supply for an unmanned aerial vehicle.
Detailed Description
The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only a few embodiments of the present invention; but not all embodiments. Based on the embodiments in the present invention; all other embodiments obtained by those skilled in the art without undue burden; all falling within the scope of the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "provided," "connected," and "connected" are to be construed broadly; for example, the connection may be fixed connection, detachable connection, or integral connection, mechanical connection, electrical connection, direct connection, indirect connection via an intermediate medium, or communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-3, a high-power dual-input power supply for an unmanned aerial vehicle includes an AC/DC boost converter, a switching device, a first DC/DC converter, a second DC/DC converter, a fan module, and a control module;
the input end of the AC/DC boost converter is connected with an AC input three-phase, the output end of the AC/DC boost converter is connected with a high-voltage direct-current bus, the AC input three-phase converts the AC input into the high-voltage direct-current bus through the AC/DC boost converter, and the AC input three-phase comprises a power grid, a generator and the like.
The direct current input module is connected with the input end of the switching device in an energized mode, the output end of the switching device is connected with the high-voltage direct current bus in an energized mode, the direct current input is connected to the high-voltage direct current bus after passing through the switching device, and the direct current input comprises a storage battery.
The high-voltage direct current bus is electrically connected with the input end of the first DC/DC converter and the input end of the second DC/DC converter, the output end of the first DC/DC converter is connected with the unmanned aerial vehicle power supply bus, the output end of the second DC/DC converter is electrically connected with the control of the terminal equipment, the high-voltage direct current bus is converted into high-voltage direct current through the first DC/DC converter to be output to power the unmanned aerial vehicle equipment, and the high-voltage direct current bus is converted into low-voltage direct current through the second DC/DC converter to be output to power the terminal equipment.
The fan module includes first fan module, second fan module and third fan module, first fan module includes six fan groups, first fan module is connected with the AC/DC boost converter, first fan module is the heat abstractor of AC/DC boost converter, the second fan module includes six fan groups, the second fan module is connected with first DC/DC converter, the second fan module is the heat abstractor of first DC/DC converter, the third fan module includes two fan groups, third fan module is connected with second DC/DC converter, the third fan module is the heat abstractor of second DC/DC converter.
The fan module is in communication connection with the control module, the output end of the control module is in communication connection with the switching device, the control module is in communication connection with the AC/DC boost converter, the first DC/DC converter and the second DC/DC converter, and the control module is used for controlling the operation of the fan module, the AC/DC boost converter, the switching device, the first DC/DC converter and the second DC/DC converter. The AC/DC boost converter, the switching device, the first DC/DC converter, the second DC/DC converter and feedback signals of each fan (input and output status signals of each part, including but not limited to signals of voltage, current, temperature and the like) are sent to the control module; the control module judges whether to switch the input state according to the input detection signal, and the control module controls the switch of the fan according to the output load states and the temperatures of the AC/DC boost converter, the first DC/DC converter and the second DC/DC converter.
The control module is in communication connection with the high-voltage direct-current bus, so that the device is convenient to use.
The switching device is internally provided with a switching device switch K1, when the control module detects that the input is switched from direct current to alternating current, the control module firstly turns off the switching device switch K1, then sends out an AC/DC boost converter working command, and the direct current power supply is switched to alternating current power supply in zero delay.
The trigger D1 is arranged in the switching device, when the control module detects that the input is switched from alternating current power supply to direct current power supply, the switching device firstly realizes zero-delay switching action by the trigger D1, and then the control module turns on the switching device switch K1, so that loss is reduced while zero-delay switching is realized, and the overall efficiency is improved.
As shown in fig. 3, the control module detects the output load and the temperature state of the AC/DC boost converter, adjusts the running number and the rotating speed of the cooling fan in real time, realizes the maximum reduction of loss and improves the efficiency of the whole machine; the control module detects the output load and the temperature state of the first DC/DC converter, adjusts the running number and the rotating speed of the cooling fan in real time, reduces the loss to the greatest extent, and improves the efficiency of the whole machine.
In this embodiment, the voltage of the high-voltage dc bus is any value within the range of 80% to 120% of 500V, 700V, or 800V. The voltage of the high voltage output is any value in the range of 1000V to 2000V.
The invention realizes zero-delay switching of the high-power double-input power supply for the unmanned aerial vehicle, the alternating-current input power supply is preferential, the fan radiating device adjusts the wind speed in real time along with the load size and the temperature of each converter, so that the overall efficiency of the equipment is improved, and the power utilization of the equipment on the aircraft is high in reliability and stability.
The invention realizes zero-delay switching of the high-power double-input power supply for the unmanned aerial vehicle, the alternating-current input power supply is preferential, the fan radiating device adjusts the wind speed in real time along with the load size and the temperature of each converter, so that the overall efficiency of the equipment is improved, and the power utilization of the equipment on the aircraft is high in reliability and stability.
As would be apparent to one skilled in the art; it is obvious that the invention is not limited to the details of the above-described exemplary embodiments; and without departing from the spirit or essential characteristics of the invention; the invention can be embodied in other specific forms. Thus, the method comprises the steps of; from either point of view; the embodiments should be considered as exemplary; and is non-limiting; the scope of the invention is indicated by the appended claims rather than by the foregoing description; it is therefore intended to include within the invention all changes that fall within the meaning and range of equivalency of the claims. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it is provided that; it should be understood that; although the present description describes embodiments; but not every embodiment contains only one independent technical solution; this manner of description is for clarity only; the skilled artisan should recognize the specification as a whole; the technical solutions in the embodiments may also be combined appropriately; forming other embodiments as will be appreciated by those skilled in the art.
Claims (9)
1. The high-power double-input power supply for the unmanned aerial vehicle is characterized by comprising an AC/DC boost converter, a switching device, a first DC/DC converter, a second DC/DC converter, a fan module and a control module;
the input end of the AC/DC boost converter is connected with an AC input three-phase, the output end of the AC/DC boost converter is connected with a high-voltage direct-current bus, and the AC input three-phase converts the AC input into the high-voltage direct-current bus through the AC/DC boost converter;
the input end of the switching device is connected with the direct current input module in an energized mode, the output end of the switching device is connected with the high-voltage direct current bus in an energized mode, and the direct current input is connected to the high-voltage direct current bus after passing through the switching device;
the first DC/DC converter input end and the second DC/DC converter input end are electrically connected with the high-voltage direct current bus, the first DC/DC converter output end is connected with the unmanned aerial vehicle power supply bus, the second DC/DC converter output end is electrically connected with the control of the terminal equipment, the high-voltage direct current bus is converted into high-voltage direct current through the first DC/DC converter and is output to supply power for the unmanned aerial vehicle equipment, and the high-voltage direct current bus is converted into low-voltage direct current through the second DC/DC converter and is output to supply power for the terminal equipment;
the fan modules comprise a first fan module, a second fan module and a third fan module; the first fan module comprises six groups of fans, is connected with the AC/DC boost converter and is a heat radiating device of the AC/DC boost converter; the second fan module comprises six groups of fans, is connected with the first DC/DC converter and is a heat radiating device of the first DC/DC converter; the third fan module comprises two groups of fans, the third fan module is connected with the second DC/DC converter, and the third fan module is a heat dissipation device of the second DC/DC converter;
the control module is in communication connection with the fan module, the output end of the control module is in communication connection with the switching device, the control module is in communication connection with the AC/DC boost converter, the first DC/DC converter and the second DC/DC converter, and feedback signals of the AC/DC boost converter, the switching device, the first DC/DC converter, the second DC/DC converter and the fans of each group are sent to the control module; the control module judges whether to switch the input state according to the input feedback signals, and the control module controls the switch of the fan according to the output load states and the temperatures of the AC/DC boost converter, the first DC/DC converter and the second DC/DC converter.
2. The high power dual input power supply for an unmanned aerial vehicle of claim 1, wherein the control module is communicatively coupled to a high voltage dc bus.
3. The high-power dual-input power supply for the unmanned aerial vehicle according to claim 2, wherein a switching device switch K1 is arranged in the switching device, when the control module detects that the input is switched from direct current to alternating current, the control module turns off the switching device switch K1 firstly, then sends out an AC/DC boost converter working command, and the direct current power supply is switched to alternating current in zero time delay.
4. The high-power dual-input power supply for the unmanned aerial vehicle according to claim 3, wherein a trigger D1 is arranged in the switching device, when the control module detects that the input is switched from alternating current power supply to direct current power supply, the switching device firstly realizes zero-delay switching action by the trigger D1, and then the control module turns on a switch K1 of the switching device for zero-delay switching and simultaneously reduces loss.
5. The high-power dual-input power supply for an unmanned aerial vehicle of claim 4, wherein the control module detects information of an output load and a temperature state of the AC/DC boost converter for adjusting the number of operations and the rotational speed of the heat dissipating fans in real time.
6. The high-power dual-input power supply for the unmanned aerial vehicle according to claim 5, wherein the rated voltage of the high-voltage direct-current bus is 500V or 700V or 800V, and the output voltage of the high-voltage direct-current bus is any value in the range of 80% -120% of the rated voltage.
7. The high power dual input power supply for a drone of claim 6, wherein the voltage of the output of the first and second DC/DC converters is any value in the range of 1000V to 2000V.
8. The high power dual input power supply for a drone of claim 1, wherein the ac input three phases include a grid and a generator, and the dc input module includes a battery.
9. The high power dual input power supply for a drone of claim 8, wherein the feedback signals include input and output status signals, voltage, current, temperature of the AC/DC boost converter, the first DC/DC converter, the second DC/DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311420377.8A CN117477518A (en) | 2023-10-30 | 2023-10-30 | High-power double-input power supply for unmanned aerial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311420377.8A CN117477518A (en) | 2023-10-30 | 2023-10-30 | High-power double-input power supply for unmanned aerial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117477518A true CN117477518A (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311420377.8A Pending CN117477518A (en) | 2023-10-30 | 2023-10-30 | High-power double-input power supply for unmanned aerial vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN117477518A (en) |
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2023
- 2023-10-30 CN CN202311420377.8A patent/CN117477518A/en active Pending
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